Sample_TEST4

# Sample_TEST4 - Name Page 1 ME 3720B Intro Fluid Thermo Eng...

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Name: ___________________________ Page 1 ME 3720B Intro Fluid Thermo Eng – Spring 200 8 Sample Test #4 (open textbook only) You do not need to follow any specific procedure. Use a hand-held calculator. Problem 1. (50 pts) You hold a nozzle horizontally, i.e., the gravitational force is the in the z -direction so it can be ignored. As shown in the figure, water flows into the nozzle at port 1 in the x - direction and comes out of the nozzle at port 2 in the y -direction. The gage pressure at port 2, 2 0 p = , and the gage pressure at port 1, 1 312 kPa p = . The diameters at ports 1 and 2 are D 1 = 25 mm and D 2 = 5 mm, respectively. (Neglect losses.) 1 2 x y (i) (20 pt) Determine the velocities at port 1 and port 2. (ii) (15 pt) Determine the x -component of the force needed to hold the nozzle (be careful about the sign/direction). (iii) (15 pt) Determine the y -component of the force needed to hold the nozzle (be careful about the sign/direction).

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Name: ___________________________ Page 2 Problem 2. (50 pts) An engine oil cooler consists of a bundle of smooth tubes, each having a length
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Sample_TEST4 - Name Page 1 ME 3720B Intro Fluid Thermo Eng...

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